"This is why we are also referring to it as hybrid modeling. "We can combine the best of both worlds in gray box models," summarizes Jaeschke. However, what happens inside these systems remains unclear-hence the name black box model. For data-driven models that use artificial intelligence, complex structures and large amounts of data are no problem. However, the more complex an electronic system is, the harder it is to map and monitor it on a purely physical level in a holistic manner. With their expertise in measurement technology and design, the researchers can develop models for condition monitoring and forecasting based on physical processes and modeled around, for example, boundary conditions such as temperature or humidity.īecause it is clear how this type of model functions, it is called a white box model. It has acquired this name as it is based on both white box and black box approaches.įor many years, Fraunhofer IZM has been working intensively on electronic systems at a physical level. The project's researchers see the gray box model as the key to effective self-validation of electronic systems. This makes it a struggle to monitor electronic systems." The mechanical stability of the component often does not provide early enough detection of signs of aging. "Long before a system fails, certain functions can be compromised, for example when materials become brittle. Johannes Jaeschke, electrical engineer and the Fraunhofer IZM project lead for the joint project. "We are more interested in the state before the electronics are broken than when they are actually broken," explains Dr. As part of the SesiM project, which began last summer under the leadership of Siemens AG, Fraunhofer researchers are working together with other partners from the fields of mobility and artificial intelligence to find self-validation solutions for complex electronic systems.įocusing on automotive and rail applications, the researchers are investigating how these systems could assess themselves and report on their condition, for example via an integrated light system. One such example is electronic systems or parts thereof that are installed in duplicate, so that when a fault occurs, the backup system can take over until the problem is fixed.Ī research project at Fraunhofer IZM is contributing to a future of more elegant, sustainable and energy-efficient solutions in this area. Until now, this problem for safety-critical systems has often been solved in practice with overdesign and redundant features. Today, however, our vehicles are equipped with more and more electronic devices that must be able to withstand these extreme conditions. The basic principle can, however, be transferred to many more application areas.Ī car is expected to run reliably for many years, through hot summers, frosty winters, rain and storms. The new process is being initially developed and tested for safety-critical applications in the automotive and rail sectors.
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